Dynacord cms1600-3 service manual

Hi, need help get service manual for Dynacord CMS1600-3 a very wanted audio mixer in India. I don't know why company does not publish schematic diagrams of the machines. Tried all web sites, could not find anything helpful. It has smps with microprocessor, available in the market but the software is not. Effect board is also costly. I will be very much thankful to get help. Thanks again.